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Dynamics of ecosystem carbon balance recovering from a clear-cutting in a cool-temperate forest

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Title: Dynamics of ecosystem carbon balance recovering from a clear-cutting in a cool-temperate forest
Authors: Aguilos, Maricar Browse this author
Takagi, Kentaro Browse this author →KAKEN DB
Liang, Naishen Browse this author →KAKEN DB
Ueyama, Masahito Browse this author →KAKEN DB
Fukuzawa, Karibu Browse this author →KAKEN DB
Nomura, Mutsumi Browse this author
Kishida, Osamu Browse this author →KAKEN DB
Fukazawa, Tatsuya Browse this author
Takahashi, Hiroyuki Browse this author
Kotsuka, Chikara Browse this author
Sakai, Rei Browse this author
Ito, Kinya Browse this author
Watanabe, Yoko Browse this author →KAKEN DB
Fujinuma, Yasumi Browse this author
Takahashi, Yoshiyuki Browse this author →KAKEN DB
Murayama, Takeshi Browse this author
Saigusa, Nobuko Browse this author →KAKEN DB
Sasa, Kaichiro Browse this author →KAKEN DB
Keywords: BIOME-BGC
Carbon budget
Carbon compensation point
Forest disturbance
Issue Date: 15-Oct-2014
Publisher: Elsevier Science
Journal Title: Agricultural and Forest Meteorology
Volume: 197
Start Page: 26
End Page: 39
Publisher DOI: 10.1016/j.agrformet.2014.06.002
Abstract: A mixed forest in northern Japan, which had been a weak carbon sink (net ecosystem CO2 exchange [NEE] = -0.44 +/- 0.5 Mg C ha(-1) yr(-1)), was disturbed by clear-cutting in 2003 and was replaced with a hybrid larch (Larix gmelinii x L. kaempferi) plantation in the same year. To evaluate the impact of the clear-cutting on the ecosystem's carbon budget, we used 10.5 years (2001-2011) of eddy covariance measurements of CO2 fluxes and the biomass observation for each ecosystem component. BIOME-BGC model was applied to simulate the changes in the carbon fluxes and stocks caused by the clear-cutting. After clear-cutting in 2003, the ecosystem abruptly became a large carbon source. The total CO2 emission during the first 3 years after the disturbance (2003-2005) was 12.2 +/- (0.9-1.5; possible min-max range of the error) Mg C ha(-1), yet gradually decreased to 2.5 +/- (1-2) Mg C ha(-1) during the next 4 years. By 2010, the ecosystem had regained its status as a carbon sink (NEE = -0.49 +/- 0.5 Mg C ha(-1) yr(-1)). Total gross primary production, ecosystem respiration, and NEE during the 7 years after the clear-cutting (2003-2009) were 64.5 +/- (2.6-7), 79.2 +/- (2.6-7), and 14.7 +/- (1.3-3.5) Mg C ha(-1), respectively. From 2003 to 2009, the understory Sasa biomass increased by 16.3 +/- 4.8 Mg C ha(-1), whereas the newly planted larch only gained 1.00 +/- 0.02 Mg C ha(-1). The BIOME-BGC simulated observed carbon fluxes and stocks, although further modification on the parameter set may be needed according with the tree growth and corresponding suppression of Sasa growth. Ecosystem carbon budget evaluation and the model simulation suggested that the litter including harvest residues became a large carbon emitter (similar to 31.9 Mg C ha(-1)) during the same period. Based on the cumulative NEE during the period when the forest was a net carbon source, we estimate that the ecosystem will require another 8-34 years to fully recover all of the CO2 that was emitted after the clear-cutting, if off-site carbon storage in forest products is not considered. (C) 2014 Elsevier B.V. All rights reserved.
Type: article (author version)
Appears in Collections:北方生物圏フィールド科学センター (Field Science Center for Northern Biosphere) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 高木 健太郎

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